Olxxtch



` 3 Sheets-Shea?J 1. E. SHAW.

CLUTCH (No Model.)

No. 495,602. Pateted Apr. 18, 189s.

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E. SHAW.

CLUTCH. No. 495,602. y y Patented Apr. 18, 1893.

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No. 495,602. Patented Apr. 18, 1893.

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l UNITED.Y STATES' PATENT i Ormes.

EDWARD SHAW, or BRISTOL, ENGLAND.

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SPECIFICATION forming part of Letters Patent No. 495,602, dated Apri1,18,1893.

` Application lfiled September 16,1892. Serial No.l 446,123- (No model.)

To all whom it may concern/.4

Be it known that I, EDWARD SHAW, a subject of the Queen of Great Britain and Ireland, residing at Bristol, England, have invented new and useful Improvements in andl Relating to Clutches, of which the following is a specification.

This invention has special reference to clutches known as cone clutches and to brakes and like appliances Aconstructed on similar principles. According to one arrangement comprised in this invention the cones employed therein are each cut so as to form coils. They are locked together or separated, at will, by means of suitable gear. Under a second arrangement, one cone, the outer, only is in the form of a coil; the other being, not thus cut. The cones are locked together or separated, at will, by suitable gear. a third arrangement the inner cone only is in the form of a coil, the, outer being an uncut cup or shell.

Figurel is a side elevation of a clutch with a portion 4broken away, and the Wheel in vertical section. Figs. 2, 3 and 4 are dierent views of a single modification. Fig. 2 is a side elevation, the wheel, as before, being in vertical section. Fig. 3, is a section on the line O-P in Fig. 2. l Fig. 4 is a section on the line QR in Fig. 2. Fig. 5 is a side eleva tion showing another modification, with a portion broken away.

Similar letters of reference indicate corresponding parts in all the figures where they appear. p

I'n Fig. l is illustrated anarrangement according to which both cones A and B are cut so as to formcoils. The inner cone B with its boss D, made in one piece therewith, is loose upon the shaft S. On the boss D is keyedthe rope-wheel F. rl"he cone A, which,

by means of the feather C, rotates with the` the direction of rotation'of the shaft S. The

rection, by any suitable means.

According t0 lserve with either form.

I have shown a collar a kept in place by the feather C. When, through the medium of the hand lever lathe coneA is moved. into engagement with the cone B, the free end of the spiral on the cone A is retarded and the free end of the cone B carried forward, and hence the cone A contractsandthe cone B expands. Thus the cones become inter-locked or more properly, eficiently engaged by friction and the `wheel F iscaused to rotate with the shaft S so long as this condition is maintained. The cones A and B are disengaged by Withdrawing the former by turning the lever b in the proper direction.

In Figs. 2, 3 and 4 is shown, a modification under which the inner cone B, loose upon the shaft S, is not spirally divided, and the cone A consists of a coil made separate from the` neckA. Fig. 3 is a section on the line O P, -Fig,2, and Fig-n4 is a section on the line QR, Fig. 2. Extending forward from the neck A', which, by means of the feather C rotates with the shaft S, is a pair of arms g, g with which the two ends of the cone A engage. The cone A is loose upon the cone B and is held against endwise displacement by the 'projections g on the arms g g near their hubs or necks', and the lugs or projections g2 at the ends of the said arms, as seen in Fig. 2.l The arms g, g are turned inward at their free ends so as to engage over the inner end of the cone A, as shown. As in the arrangement above describedfthe cone B is kept in place on the shaft S by the collars a and E, and when the cone A is moved forward so as to interlock ter, and the pulley F keyed on the boss D which is formed in one piece until the cone B is carried round the shaft S. The'special starting gear shown in these figures may Fitting the shaft S loosely, and prevented from rotating therewith by an outside attachment, such as an eye e in the end of a stay-e', isa sleeve Gprevented, by suitable means, from traveling with the cone B the spiral binds rupon the lati along on, the shaft. On one side of the sleeve.l v

G islformed a bracket 'in a slot in which works asliding-bar H. the spindleJ engages4 With a'notch in the The cranked end of I Ico bar H, which latter is' turned `up at one end# to project into the groove of the neck A of the cone A. The spindle J is kept Yin place by the collar J .clamped toit. By operating the hand-lever b, the bar H is moved along parallel with the shaft and causes the cones A and B to interlock or disengage according to the direction in which the bar is moved.

, At Fig. 5 is shown a modification under which the inner cone B only is spirally out. Theigure illustrates the application of the device as a shaftfcoupling. The conc B is rigidly secured upon the shaft N by a key passed into the boss l). The operating gear 1s similar to-that hereinbefore described with reference to Fig. 1, and when through the medium thereof the cone A, which byy means of the feather O rotates with the shaft M, is made to engage with the cone B, the spiral 4portion of the latter expands and binds on the inside of the cone A, and the shaft N is made to rotate with the shaft M. In order to steady the shafts M and N, a socket B is formed on the cone B and extended forward, as shown. The lends ofthe. shafts lare received in this socket.

Either arrangement above described and illustrated in the drawings is applicable for the purpose of a brake, and forthis,'one part is to be rigidly secured and prevented from rotating, the other part being free to rotate so that when the frictional grip is applied both parts rotateA together.

1. The combination with ashaft of cones on said shaft, one of said cones being spirally out, and said cones being arranged to interlock or bind together when put into contact axially,

and shifting mechanism for putting said cones into such contact, substantially as herein-set forth. 4 l

2. In cone clutches and the like, the supporting shaft, the pair -of cones, one within the other, spirally cut in opposite directions, one fixed on said shaft and the other arranged in line therewith, in combination and with means for moving the said cones into and out of contact with each other so as to interlock and transmit power from one cone and its connections to the other cone and its connections, when required,all substantially as herein specified. In testimony whereof I have signed my name to this specification in the presence of two subscribing Witnesses.

l EDWARD SHAW. Witnesses:

NICHOLAS WATTS, y Bristol Bank Build-ings, CHARLES FRENCH,

Busby Park, Bristol.

Bristol. 

